Add a function to abstract the common task of validating i.MX8 container image headers.
Signed-off-by: Sean Anderson seanga2@gmail.com ---
arch/arm/include/asm/mach-imx/image.h | 9 +++++++++ arch/arm/mach-imx/ele_ahab.c | 2 +- arch/arm/mach-imx/image-container.c | 2 +- arch/arm/mach-imx/imx8/ahab.c | 2 +- arch/arm/mach-imx/parse-container.c | 2 +- arch/arm/mach-imx/spl_imx_romapi.c | 3 ++- 6 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/arch/arm/include/asm/mach-imx/image.h b/arch/arm/include/asm/mach-imx/image.h index ee67ca96f4c..54cd684e35d 100644 --- a/arch/arm/include/asm/mach-imx/image.h +++ b/arch/arm/include/asm/mach-imx/image.h @@ -18,6 +18,9 @@ #define CONTAINER_HDR_QSPI_OFFSET SZ_4K #define CONTAINER_HDR_NAND_OFFSET SZ_128M
+#define CONTAINER_HDR_TAG 0x87 +#define CONTAINER_HDR_VERSION 0 + struct container_hdr { u8 version; u8 length_lsb; @@ -66,4 +69,10 @@ struct generate_key_blob_hdr { } __packed;
int get_container_size(ulong addr, u16 *header_length); + +static inline bool valid_container_hdr(struct container_hdr *container) +{ + return container->tag == CONTAINER_HDR_TAG && + container->version == CONTAINER_HDR_VERSION; +} #endif diff --git a/arch/arm/mach-imx/ele_ahab.c b/arch/arm/mach-imx/ele_ahab.c index 785b0d6ec3c..6a1ad198f89 100644 --- a/arch/arm/mach-imx/ele_ahab.c +++ b/arch/arm/mach-imx/ele_ahab.c @@ -343,7 +343,7 @@ int authenticate_os_container(ulong addr) }
phdr = (struct container_hdr *)addr; - if (phdr->tag != 0x87 || phdr->version != 0x0) { + if (!valid_container_hdr(phdr)) { printf("Error: Wrong container header\n"); return -EFAULT; } diff --git a/arch/arm/mach-imx/image-container.c b/arch/arm/mach-imx/image-container.c index 5f188ab32d1..eff9e0c4597 100644 --- a/arch/arm/mach-imx/image-container.c +++ b/arch/arm/mach-imx/image-container.c @@ -50,7 +50,7 @@ int get_container_size(ulong addr, u16 *header_length) u32 max_offset = 0, img_end;
phdr = (struct container_hdr *)addr; - if (phdr->tag != 0x87 || phdr->version != 0x0) { + if (!valid_container_hdr(phdr)) { debug("Wrong container header\n"); return -EFAULT; } diff --git a/arch/arm/mach-imx/imx8/ahab.c b/arch/arm/mach-imx/imx8/ahab.c index b58b14ca9b4..44ea63584aa 100644 --- a/arch/arm/mach-imx/imx8/ahab.c +++ b/arch/arm/mach-imx/imx8/ahab.c @@ -146,7 +146,7 @@ int authenticate_os_container(ulong addr) }
phdr = (struct container_hdr *)addr; - if (phdr->tag != 0x87 && phdr->version != 0x0) { + if (!valid_container_hdr(phdr)) { printf("Error: Wrong container header\n"); return -EFAULT; } diff --git a/arch/arm/mach-imx/parse-container.c b/arch/arm/mach-imx/parse-container.c index c5df78d1c58..0a3d41f411e 100644 --- a/arch/arm/mach-imx/parse-container.c +++ b/arch/arm/mach-imx/parse-container.c @@ -84,7 +84,7 @@ static int read_auth_container(struct spl_image_info *spl_image, goto end; }
- if (container->tag != 0x87 && container->version != 0x0) { + if (!valid_container_hdr(container)) { printf("Wrong container header\n"); ret = -ENOENT; goto end; diff --git a/arch/arm/mach-imx/spl_imx_romapi.c b/arch/arm/mach-imx/spl_imx_romapi.c index 4af41699678..b51061b987b 100644 --- a/arch/arm/mach-imx/spl_imx_romapi.c +++ b/arch/arm/mach-imx/spl_imx_romapi.c @@ -184,7 +184,8 @@ static u8 *search_container_header(u8 *p, int size)
for (i = 0; i < size; i += 4) { hdr = p + i; - if (*(hdr + 3) == 0x87 && *hdr == 0 && (*(hdr + 1) != 0 || *(hdr + 2) != 0)) + if (valid_container_hdr((void *)hdr) && + (*(hdr + 1) != 0 || *(hdr + 2) != 0)) return p + i; }